I think people really believe the marketing and when they try a racquet they expect to gain immediately a level or two, when that obviously doesn't happen they start to think that "today's racquets are garbage", is just a sign of a begginer, someone that still have to acquire the knowledge to really discuss about anything tennis related beyond surface level.
The best advice is to focus on technique and when the game has developed and a style has appeared, then you can start to look for a frame that complements your style but if you are searching for a frame that makes you play better, the answer is that there isn't one, is not the tool, is the ability of the carpenter.